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JMD : Journal of Movement Disorders

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Letter to the editor
A Case of AOA2 With Compound Heterozygous SETX Mutations
Hee Jin Chang, Ryul Kim, Minchae Kim, Jangsup Moon, Man Jin Kim, Han-Joon Kim
J Mov Disord. 2022;15(2):178-180.   Published online December 24, 2021
DOI: https://doi.org/10.14802/jmd.21139
  • 1,234 View
  • 206 Download
PDF
Brief communication
Content Analysis of Korean Videos Regarding Restless Legs Syndrome on YouTube
Joohwan Kim, Ryul Kim, Jin-Sun Jun, So-Hyun Ahn, San Jung, Yang-Ki Minn, Sung Hee Hwang
J Mov Disord. 2021;14(2):144-147.   Published online May 3, 2021
DOI: https://doi.org/10.14802/jmd.20137
  • 2,920 View
  • 72 Download
  • 1 Citations
AbstractAbstract PDFSupplementary Material
Objective
To evaluate the accuracy and quality of Korean videos associated with restless legs syndrome (RLS) on YouTube.
Methods
A YouTube search was performed on April 1, 2020 using the term “restless legs syndrome” in the Korean language. Two reviewers coded the source, content, and demographics of the included videos. Video quality was assessed using the modified DISCERN (mDISCERN) instrument.
Results
Among the 80 videos analyzed, 44 (55.0%) were reliable, and 36 (45.0%) were misleading. There was a trend toward a higher number of mean daily views in the misleading videos than in the reliable videos. Most of the misleading videos (72.2%) advocated complementary and alternative medicine as a primary treatment for RLS. Although the reliable videos had higher mDISCERN scores than the misleading videos, the overall quality of the reliable videos was low.
Conclusion
Many Korean videos regarding RLS on YouTube involve a risk of exposure to misinformation and are of unsatisfactory quality.
Letters to the editor
A Rare Case of Late Adult-Onset Niemann-Pick Disease Type C
Ryul Kim, Dallah Yoo, Sangmin Park, Jung Hwan Shin, Ji-Hyun Choi, Han-Joon Kim, Beomseok Jeon
J Mov Disord. 2020;13(2):163-165.   Published online March 18, 2020
DOI: https://doi.org/10.14802/jmd.19077
  • 4,642 View
  • 165 Download
  • 2 Citations
PDFSupplementary Material
Combined Hemichorea and Seizures in a Patient with Nonketotic Hyperglycemia
Ryul Kim, Hee-Jin Cho, Ho-Won Lee, Jin-Sun Jun
J Mov Disord. 2020;13(1):72-73.   Published online November 8, 2019
DOI: https://doi.org/10.14802/jmd.19058
  • 4,084 View
  • 120 Download
  • 3 Citations
PDFSupplementary Material
Original Article
Validation of the Conversion between the Mini-Mental State Examination and Montreal Cognitive assessment in Korean Patients with Parkinson’s Disease
Ryul Kim, Han-Joon Kim, Aryun Kim, Mi-Hee Jang, Hyun Jeong Kim, Beomseok Jeon
J Mov Disord. 2018;11(1):30-34.   Published online January 11, 2018
DOI: https://doi.org/10.14802/jmd.17038
  • 7,045 View
  • 233 Download
  • 13 Citations
AbstractAbstract PDF
Objective
Two conversion tables between the Mini-Mental State Examination (MMSE) and Montreal Cognitive Assessment (MoCA) have recently been established for Parkinson’s disease (PD). This study aimed to validate them in Korean patients with PD and to evaluate whether they could be influenced by educational level.
Methods
A total of 391 patients with PD who undertook both the Korean MMSE and the Korean MoCA during the same session were retrospectively assessed. The mean, median, and root mean squared error (RMSE) of the difference between the true and converted MMSE scores and the intraclass correlation coefficient (ICC) were calculated according to educational level (6 or fewer years, 7–12 years, or 13 or more years).
Results
Both conversions had a median value of 0, with a small mean and RMSE of differences, and a high correlation between the true and converted MMSE scores. In the classification according to educational level, all groups had roughly similar values of the median, mean, RMSE, and ICC both within and between the conversions.
Conclusion
Our findings suggest that both MMSE-MoCA conversion tables are useful instruments for transforming MoCA scores into converted MMSE scores in Korean patients with PD, regardless of educational level. These will greatly enhance the utility of the existing cognitive data from the Korean PD population in clinical and research settings.
Case Report
Stiff-Person Syndrome: Case Series
Yu Jin Jung, Han G. Jeong, Ryul Kim, Han-Joon Kim, Beom S. Jeon
J Mov Disord. 2014;7(1):19-21.   Published online April 30, 2014
DOI: https://doi.org/10.14802/jmd.14004
  • 12,055 View
  • 1,361 Download
  • 4 Citations
AbstractAbstract PDF
Stiff-person syndrome (SPS) is a rare disorder, characterized by progressive fluctuating muscular rigidity and spasms. Glutamic acid decarboxylase (GAD) antibody is primarily involved in the pathogenesis of SPS and SPS is strongly associated with other autoimmune disease. Here we report three cases of patients with classical SPS finally confirmed by high serum level of GAD antibodies. All of our patients respond favorably to gamma amino butyric acid-enhancing drugs and immunotherapies.

JMD : Journal of Movement Disorders